Reexamination of the Acid-Ash Content of Several Diets

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Abstract
The acid-ash (ash-T.A.) content of several foods and diets containing variable levels of protein has been reexamined using recently developed techniques. As previously suggested, protein is the principal constituent of the diet that yields an acid-ash residue, whereas fruits and vegetables yield an alkaline residue. The usual 60– to 100-g protein diet is essentially neutral in composition, whereas the 40-g protein diet is basic in composition. The 20-g protein modified Giovannetti diet, although low in protein, is also essentially neutral because of the reduced content of fruits and vegetables. The 40-g protein diet is therefore advocated as the most useful diet in the treatment and prevention of renal acidosis.